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2 years ago

14

Which of the following represents a beta particle?

2 answers:

weeeeeb [17]2 years ago

8 0

Answer:

that the second one surely represent the beta particle

Vera_Pavlovna [14]2 years ago

6 0

Answer:

${ \sf{A. \: \: { _{ - 1}{}^{0} e }}}$

<u> </u><u>A</u><u> </u><u>beta</u><u> </u><u>particle</u><u> </u><u>is</u><u> </u><u>an</u><u> </u><u>electron</u><u>.</u>

Explanation:

${ \tt{ {}^{4}_{2}He \: \: is \: an \: alpha \: particle.}} \\ { \tt{ \gamma \: \: is \: gamma \: rays}} \\ { \tt{ \alpha \: is \: same \: as \: alpha \: particle}}$

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Does Hornfels have biological origins

anzhelika [568]

Answer:

Hornfels most commonly form in the aureole of granitic intrusions in the upper or middle crust. Hornfels formed from contact metamorphism by volcanic activity very close to the surface can produce unusual and distinctive minerals.

3 0

3 years ago

What is the pressure of 1.50 moles of a gas in a 30.0L tank at a temperature of<br> 285K?

julia-pushkina [17]

The pressure of the gas : 1.1685 atm

<h3>Further explanation</h3>

In general, the gas equation can be written

$\large {\boxed {\bold {PV = nRT}}}$

where

P = pressure, atm

V = volume, liter

n = number of moles

R = gas constant = 0.08206 L.atm / mol K

T = temperature, Kelvin

n=moles=1.5

V=volumes = 30 L

T=temperature=285 K

The pressure :

$\tt P=\dfrac{nRT}{V}\\\\n=\dfrac{1.5\times 0.082\times 285}{30}\\\\P=1.1685~atm$

7 0

3 years ago

True/False: When a substance is heated, the change in energy causes the bonds between particles to become stronger.

Rzqust [24]

Answer:

false

Explanation:

the energy causes the bonds to become looser

5 0

3 years ago

Read 2 more answers

For 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g), if you begin with 16.00 g ammonia and excess oxygen, how many grams of water will be ob

iragen [17]

12.7 grams approximately

8 0

3 years ago

A certain compound contains 4.0 g of calcium and 7.1 g of chlorine. Its relative molecular mass is 111. Find its empirical and m

Phantasy [73]

Given :

A certain compound contains 4.0 g of calcium and 7.1 g of chlorine.

Its relative molecular mass is 111.

To Find :

Its empirical and molecular formulas.

Solution :

Moles of calcium , $n_1=\dfrac{4}{40}=0.1\ moles$ .

Moles of chlorine , $n_2=\dfrac{7.1}{35.45}=0.2\ moles$ .

The ratio calcium and chlorine is 1 : 2 .

So , the empirical formula is $CaCl_2$ .

Now , molecular mass of $CaCl_2$ is :

$M=40+(2\times 35.45)\\\\M=110.9\ g$

So , $n=\dfrac{111}{110.9} \approx1$

Therefore , the molecular formula is also $CaCl_2$ .

Hence , this is the required solution .

7 0

3 years ago